1. The sports meet， originally due to be held last Friday， was finally _D_ because of the bad weather. [sports meet=sports meeting 运动会]

A set off B broken off C worn off D called off

2. Until then， his family _D_ from him for six months.

A didn’t hear B hasn’t been hearing C hasn’t heard D hadn’t heard

until then 直到那时。 hear from sb. 收到某人的来信，得到某人的消息。

3. The ability to store knowledge makes computers different form every other machine _A_ invented. [ever adj. 曾经，以往任何时候]

A ever B thus C yet D aswww.telnote.cn

4. I’m not sure whether I can gain any profit from the investment， so I can’t make a(n) _C_ promise to help you.

A exact B defined C definite D sure

definite： unlikely to be changed 不可能被改变的; definite promise 不可能被改变的诺言。

5. I have kept that portrait _B_ I can see it every day， as it always reminds me of my university days in London.

A which B where C whether D when

which在定语从句中除了做主语就是做宾语，when在定语从句中只能做时间状语。

remind sb. of sth. 使某人想起某事。